| pubmed-article:15665241 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:15665241 | lifeskim:mentions | umls-concept:C0024658 | lld:lifeskim |
| pubmed-article:15665241 | lifeskim:mentions | umls-concept:C0205177 | lld:lifeskim |
| pubmed-article:15665241 | lifeskim:mentions | umls-concept:C1157783 | lld:lifeskim |
| pubmed-article:15665241 | lifeskim:mentions | umls-concept:C0596105 | lld:lifeskim |
| pubmed-article:15665241 | lifeskim:mentions | umls-concept:C0205374 | lld:lifeskim |
| pubmed-article:15665241 | pubmed:issue | 2 | lld:pubmed |
| pubmed-article:15665241 | pubmed:dateCreated | 2005-2-15 | lld:pubmed |
| pubmed-article:15665241 | pubmed:abstractText | Maltose is the major form of carbon exported from the chloroplast at night as a result of transitory starch breakdown. Maltose exists as an alpha- or beta-anomer. We developed an enzymatic technique for distinguishing between the two anomers of maltose and tested the accuracy and specificity of this technique using beta-maltose liberated from maltoheptose by beta-amylase. This technique was used to investigate which form of maltose is present during transitory starch degradation in bean (Phaseolus vulgaris), wild-type Arabidopsis (Arabidopsis thaliana), two starch deficient Arabidopsis lines, and one starch-excess mutant of Arabidopsis. In Phaseolus and wild-type Arabidopsis, beta-maltose levels were low during the day but were much higher at night. In Arabidopsis plants unable to metabolize maltose due to a T-DNA insertion in the gene for the cytosolic amylomaltase, (Y. Lu, T.D. Sharkey [2004] Planta 218: 466-473) levels of alpha- and beta-maltose were high during both the day and night. In starchless mutants of Arabidopsis, total maltose levels were low and almost completely in the alpha-form. We also found that the subcellular concentration of beta-maltose at night was greater in the chloroplast than in the cytosol by 278 microm. We conclude that beta-maltose is the metabolically active anomer of maltose and that a sufficient gradient of beta-maltose exists between the chloroplast and cytosol to allow for passive transport of maltose out of chloroplasts at night. | lld:pubmed |
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| pubmed-article:15665241 | pubmed:language | eng | lld:pubmed |
| pubmed-article:15665241 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:15665241 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:15665241 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:15665241 | pubmed:month | Feb | lld:pubmed |
| pubmed-article:15665241 | pubmed:issn | 0032-0889 | lld:pubmed |
| pubmed-article:15665241 | pubmed:author | pubmed-author:WeiseSean ESE | lld:pubmed |
| pubmed-article:15665241 | pubmed:author | pubmed-author:SharkeyThomas... | lld:pubmed |
| pubmed-article:15665241 | pubmed:author | pubmed-author:KimKirsten... | lld:pubmed |
| pubmed-article:15665241 | pubmed:author | pubmed-author:StewartRobert... | lld:pubmed |
| pubmed-article:15665241 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:15665241 | pubmed:volume | 137 | lld:pubmed |
| pubmed-article:15665241 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:15665241 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:15665241 | pubmed:pagination | 756-61 | lld:pubmed |
| pubmed-article:15665241 | pubmed:dateRevised | 2010-9-20 | lld:pubmed |
| pubmed-article:15665241 | pubmed:meshHeading | pubmed-meshheading:15665241... | lld:pubmed |
| pubmed-article:15665241 | pubmed:meshHeading | pubmed-meshheading:15665241... | lld:pubmed |
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| pubmed-article:15665241 | pubmed:meshHeading | pubmed-meshheading:15665241... | lld:pubmed |
| pubmed-article:15665241 | pubmed:meshHeading | pubmed-meshheading:15665241... | lld:pubmed |
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| pubmed-article:15665241 | pubmed:meshHeading | pubmed-meshheading:15665241... | lld:pubmed |
| pubmed-article:15665241 | pubmed:meshHeading | pubmed-meshheading:15665241... | lld:pubmed |
| pubmed-article:15665241 | pubmed:meshHeading | pubmed-meshheading:15665241... | lld:pubmed |
| pubmed-article:15665241 | pubmed:year | 2005 | lld:pubmed |
| pubmed-article:15665241 | pubmed:articleTitle | beta-Maltose is the metabolically active anomer of maltose during transitory starch degradation. | lld:pubmed |
| pubmed-article:15665241 | pubmed:affiliation | Department of Botany, University of Wisconsin, Madison, Wisconsin 53706, USA. | lld:pubmed |
| pubmed-article:15665241 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:15665241 | pubmed:publicationType | Research Support, U.S. Gov't, Non-P.H.S. | lld:pubmed |
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